A standard Organization for Economic Cooperation and Development (OECD) filter paper test was used to assess the acute toxicity of chlorpyrifos, atrazine, cyanazine, and simazine to the earthworm Eisenia fetida. Acute ...

The most convenient and direct method for measuring toxic effects of chemicals on organisms is the acute LC50 test. Data obtained from these tests can provide both a rank order of chemical toxicity and relative susceptibilities ...

Toxicity tests are most frequently conducted on organisms derived from laboratory cultures that have been reared for many generations following standardized protocols. The restricted density of laboratory populations and ...